| 摘要 |
An electrical circuit for a switch having a lockout feature is described. The circuit permits both a primary operator and an auxiliary operator to operate a bi-directional motor (30) by activating separate low-current switches (SW1, SW2, SW3, SW4). The circuitry enables the primary operator to disable the auxiliary operator's ability to operate the motor by activating a lockout switch (L/O). With the lockout switch activated, the primary operator can operate the motor without interference from the auxiliary operator. Highcurrent power switches (50, 52), activated via logic circuitry (70, 90) rather than by the operators, are used to complete a power circuit for energizing the motor. |
